this is because引导什么从句

this is because后可以接一个完整的句子，那么这里的because引导的是表语从句；

在这个句子里，this是主语，is是系动词，because引导的从句在系动词之后，在句子中作表语。

扩展资料

This is because the companies that make computers know best how to deal with them safely.

这是因为制造计算机的公司最清楚如何安全地处理它们。

This is because each mirror reflected the picture in the other mirror.

这是因为每一面镜子都反射了另一面镜子中的图像。

This is because people become so hungry at noon that they eat too much for lunch.

这是因为人们中午太饿,午饭吃得太多了。

This is because the number 5 is pronounced "ha" in Thai.

这是因为数字5在泰语中发音为"ha"。

This is because they have difficult climates.

这是因为他们那里的气候很恶劣。